SanDisk Extreme Pro CompactFlash Memory Cards provide 90MB per second read%2Fwrite performance for the creation of professional photographic and motion picture content%2E Ultra Direct Memory Access 6 %28UDMA%2D6%29%2C Enhanced Super%2DParallel Processing %28ESP%29%2C and proprietary Power Core Controller Technology ensure class%2Dleading 600x performance with the highest levels of quality and compatibility available%2E When paired with an UDMA compliant DSLR%2C SanDisk Extreme Pro Cards guarantee the fastest%2C most reliable recording of photo and video files%2E